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    • 53. 发明授权
    • Code amount estimating device, image coding apparatus including the code amount estimating device, and code amount estimating method
    • 代码量估计装置,包括代码量估计装置的图像编码装置和代码量估计方法
    • US07978103B2
    • 2011-07-12
    • US12724561
    • 2010-03-16
    • Yukinaga SekiTakuma ChibaKenjiro TsudaTatsuro Juri
    • Yukinaga SekiTakuma ChibaKenjiro TsudaTatsuro Juri
    • H03M7/00
    • H04N19/184H04N19/115H04N19/13H04N19/149H04N19/176H04N19/61
    • To provide a code amount estimating device which can perform, at high speed and with high precision, estimation of code amount obtained after arithmetic coding. The code amount estimating device includes a context index calculation unit which calculates a context index of a binary symbol included in binary data, and an estimate code amount calculation unit which calculates an estimate code amount for the binary data based on symbol occurrence probability information stored in association with the calculated context index and on a held probability interval range. The estimate code amount calculation unit estimates the code amount for the binary data according to code amount information indicating an association between (i) a combination of a binary symbol string including one or more binary symbols, symbol occurrence probability information, and a probability interval range and (ii) an estimate code amount for the binary symbol string.
    • 为了提供可以高速且高精度地进行算术编码后的代码量的估计的代码量估计装置。 代码量估计装置包括:上下文索引计算单元,其计算二进制数据中包括的二进制符号的上下文索引;以及估计代码量计算单元,其基于存储在所述二进制数据中的符号发生概率信息来计算二进制数据的估计代码量 与计算的上下文索引和保持概率间隔范围的关联。 估计码量计算单元根据指示(i)包括一个或多个二进制符号的二进制符号串的组合,符号发生概率信息和概率间隔范围之间的关联的代码量信息来估计二进制数据的代码量 和(ii)二进制符号串的估计代码量。
    • 56. 发明申请
    • IMAGE RECORDING DEVICE AND IMAGE REPRODUCTION DEVICE
    • 图像记录装置和图像再现装置
    • US20100277613A1
    • 2010-11-04
    • US12810345
    • 2008-12-26
    • Yukinaga SekiYuki KobayashiTakuma ChibaKenjiro TsudaHiroaki ShimazakiTatsuro JuriKatsuo SaigoTakashi Masuno
    • Yukinaga SekiYuki KobayashiTakuma ChibaKenjiro TsudaHiroaki ShimazakiTatsuro JuriKatsuo SaigoTakashi Masuno
    • H04N5/76
    • G11B20/1262G11B2020/00079G11B2020/10537G11B2020/1289G11B2220/2537H04N5/232H04N5/77H04N5/85
    • An image recording device (100), which can suppress, without causing significant image degradation, image transfer speed from an imaging device, coding speed, and image recording speed that are necessary for high-speed image capturing, includes: an image signal processing unit (102) which sequentially reads, at a frame rate for high-speed image capturing, images generated through image capturing by an imaging unit (101), and outputs, from among the images sequentially read, images read at a frame rate for normal image capturing at high resolution and other images at low resolution; an image coding unit (103) which generates a high resolution coded stream by coding an image sequence made up of the high resolution images outputted by the image signal processing unit (102); a low-resolution image coding unit (104) which generates a low resolution coded stream by coding an image sequence made up of the other low resolution images outputted by the image signal processing unit (102); and a recording processing unit (105) and a recording mechanism unit (106) which record the two streams on a recording medium.
    • 一种图像记录装置(100),其能够抑制高速图像拍摄所必需的图像转印速度,成像装置的图像传送速度,编码速度和图像记录速度,而不会导致显着的图像劣化,包括:图像信号处理单元 (102),其以用于高速图像拍摄的帧速率依次读取由成像单元(101)通过图像捕获产生的图像,并且从顺序读取的图像中输出以正常图像的帧速率读取的图像 以高分辨率和其他低分辨率图像拍摄; 图像编码单元,通过对由图像信号处理单元(102)输出的高分辨率图像构成的图像序列进行编码来生成高分辨率编码流; 通过编码由图像信号处理单元(102)输出的其他低分辨率图像构成的图像序列来生成低分辨率编码流的低分辨率图像编码单元(104)。 以及在记录介质上记录两个流的记录处理单元(105)和记录机构单元(106)。
    • 57. 发明申请
    • CODE AMOUNT ESTIMATING DEVICE, IMAGE CODING APPARATUS INCLUDING THE CODE AMOUNT ESTIMATING DEVICE, AND CODE AMOUNT ESTIMATING METHOD
    • 代码金额估算设备,图像编码设备,包括代码金额估算设备和代码金额估算方法
    • US20100238056A1
    • 2010-09-23
    • US12724561
    • 2010-03-16
    • Yukinaga SekiTakuma ChibaKenjiro TsudaTatsuro Juri
    • Yukinaga SekiTakuma ChibaKenjiro TsudaTatsuro Juri
    • H03M7/00
    • H04N19/184H04N19/115H04N19/13H04N19/149H04N19/176H04N19/61
    • To provide a code amount estimating device which can perform, at high speed and with high precision, estimation of code amount obtained after arithmetic coding. The code amount estimating device includes a context index calculation unit which calculates a context index of a binary symbol included in binary data, and an estimate code amount calculation unit which calculates an estimate code amount for the binary data based on symbol occurrence probability information stored in association with the calculated context index and on a held probability interval range. The estimate code amount calculation unit estimates the code amount for the binary data according to code amount information indicating an association between (i) a combination of a binary symbol string including one or more binary symbols, symbol occurrence probability information, and a probability interval range and (ii) an estimate code amount for the binary symbol string.
    • 为了提供可以高速且高精度地进行算术编码后的代码量的估计的代码量估计装置。 代码量估计装置包括:上下文索引计算单元,其计算二进制数据中包括的二进制符号的上下文索引;以及估计代码量计算单元,其基于存储在所述二进制数据中的符号发生概率信息来计算二进制数据的估计代码量 与计算的上下文索引和保持概率间隔范围的关联。 估计码量计算单元根据指示(i)包括一个或多个二进制符号的二进制符号串的组合,符号发生概率信息和概率间隔范围之间的关联的代码量信息来估计二进制数据的代码量 和(ii)二进制符号串的估计代码量。
    • 59. 发明申请
    • Motion vector estimating device and motion vector estimating method
    • 运动矢量估计装置和运动矢量估计方法
    • US20070098075A1
    • 2007-05-03
    • US11586584
    • 2006-10-26
    • Hideyuki OhgoseTatsuro JuriHiroshi ArakawaKatsuo SaigoKoji ArimuraYuuki MaruyamaKei Tasaka
    • Hideyuki OhgoseTatsuro JuriHiroshi ArakawaKatsuo SaigoKoji ArimuraYuuki MaruyamaKei Tasaka
    • H04N11/02H04N11/04
    • H04N19/57H04N5/145H04N19/53H04N19/61
    • To provide a motion vector estimating device and a motion vector estimating method which are capable of estimating motion vectors with a high accuracy while reducing the processing amount. The picture coding apparatus includes: a picture reducing unit which generates a reduced picture to be coded and a reduced reference picture based on an input picture including a current block and a reference picture, an area dividing unit which divides the reduced picture to be coded into plural areas, an area motion vector estimating unit which estimates, for each area, an area motion vector with respect to the reduced reference picture, a correlation calculating unit which calculates the correlation of each area motion vector, a correlation calculating unit which calculates, for each area, the correlation of the area motion vector, a search range determining unit which determines the information about the motion vector search range based on the area motion vectors and the correlations of the area motion vectors, and a coding unit which has a motion estimating unit. The motion estimating unit determines motion vector search ranges and estimates motion vectors.
    • 提供能够在减少处理量的同时高精度地估计运动矢量的运动矢量估计装置和运动矢量估计方法。 图像编码装置包括:图像缩小单元,其基于包括当前块和参考图像的输入图像生成要编码的缩小图像和缩小参考图像;区域划分单元,将要编码的缩小图像分为 多个区域,区域运动矢量估计单元,针对每个区域估计相对于缩小参考图像的区域运动矢量;相关计算单元,计算每个区域运动矢量的相关性;相关计算单元,计算用于 每个区域,区域运动矢量的相关性,基于区域运动矢量确定关于运动矢量搜索范围的信息的搜索范围确定单元和区域运动矢量的相关性以及具有运动估计的编码单元 单元。 运动估计单元确定运动矢量搜索范围并估计运动矢量。